Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Winter Cycling Don't let snow and ice discourage you this winter. The key element to year-round cycling is proper attire! Check out this winter cycling forum to chat with other ice bike fanatics.

Reply
 
Thread Tools Search this Thread
Old 11-30-07, 03:41 PM   #1
akbiker
Junior Member
Thread Starter
 
Join Date: Jul 2007
Bikes:
Posts: 13
3 flats, 1 month, help

I also posted this commuting, but I thought you guys may have some winter specific ideas.

I bought some used nokian hakka 300 studded tires for winter riding here in Alaska. I love them, but i keep getting flats in the same place over and over, 3 times so far. After about 10 miles my front tire goes flats from a rip at the base of the valve stem. I have used three different kinds of tubes all presta valves. These are not slow leaks either. the tire is fine and BOOM total loss of air, never while riding only while it parked, usually immediately after I dismount. After the second blowout I made a meticulous inspection of the entire tire and rim for causes. I taped around the valve hole in the rim just in case, but there doesn't seem to be anything else wrong. Oh, by the way it only the front tire (the back has been great) and I run about 35-40 psi. I weigh 170 and I am not really riding aggressively or doing anything out of my normal routine of commuting. Any help would be great because it is getting really annoying and expensive. thanks
akbiker is offline   Reply With Quote
Old 11-30-07, 07:52 PM   #2
ccd rider
Senior Member
 
Join Date: Aug 2006
Location: Windsor, CO
Bikes:
Posts: 314
I think sometimes even with tape it can rip there if you don't have the stem perpendicular to the hole.
ccd rider is offline   Reply With Quote
Old 12-01-07, 11:00 AM   #3
jimisnowhere
Senior Member
 
jimisnowhere's Avatar
 
Join Date: Aug 2006
Location: Lynn, MA
Bikes: 60's lowrider, 80's Cavaletto Centurion, 94 Specialized Rockhopper sport
Posts: 472
Perhaps the valve hole on the rim is sharp. Try sanding down the inside of the hole. Or the tire/tube is sliding on the rim and tears the valve stem. I assume your very careful putting the valve in straight now. Some people glue one side of their bead to the rim so it can't walk down the rim. I've read of most people doing it with a low low pressure set up coupled with wide rims. When you stop the bike to get off are you slamming the front brake?


jim
jimisnowhere is offline   Reply With Quote
Old 12-01-07, 12:16 PM   #4
Kol.klink
my bike Owns me+my wallet
 
Kol.klink's Avatar
 
Join Date: Nov 2006
Location: Sudbury, Ontario
Bikes: Px-10 singeld, 2007 KHS filte 100
Posts: 709
Make sure, obviously your tyres are properly inflated, and throw that little ring, that screws onto the valve, by the wayside
Kol.klink is offline   Reply With Quote
Old 12-01-07, 02:05 PM   #5
drmarthacastro
Cycling Fanatic
 
drmarthacastro's Avatar
 
Join Date: Apr 2007
Bikes:
Posts: 163
I don't think the problem is with the tubes I think you have a very sharp valv hole on the rim.
drmarthacastro is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 01:35 AM.